Dwayne "The Rock" Johnson held a Twitter chat today in advance of the release of his "Hercules" trailer; but other than plugging the "original superhero" in his upcoming movie, another surprising detail came out about an upcoming role:

Myself & DC have agreed on a character.. extremely complex, well known (but never played) and a pure BAD ASS MF;) #RockTalk .@ThomasEspin

While it's not a shocker that The Rock is collaborating with DC/Warner Bros. on an upcoming movie —: the actor confirmed as much back in January — what is interesting is that Mr. Johnson will be portraying a "never played" character.

We're assuming that The Rock is referring to in a theatrical feature, as pretty much every DC Comics character ever has been put on screen in animated form, or on live-action TV. So that rules out Superman, Batman, Steel, Jonah Hex, Green Lantern, and, er, Swamp Thing. Also Catwoman.

Of that list, Green Lantern is the only one fans had The Rock pegged for, specifically the character's third iteration, John Stewart. Stewart popular on the animated "Justice League Unlimited," and is considered one of the more recognizable characters of the modern era. But as The Rock later confirmed, no, that's not the character you're looking for.

Green Lantern (John Stewart) and Black Adam are my fav superheroes, but GL's already been made and stamped. #RockTalk@CFitzyy

The Rock has also been associated with Captain Marvel villain Black Adam (as he mentioned in his tweet), but that character, while "extremely complex" is far from well known.

It's possible he could be referring to Justice League hero Cyborg, a half-man, half-machine who's been heavily featured recently in the comics, and on TV in "Teen Titans GO!" But again, it's not like Cyborg is a household name.

No, we're going with Aquaman.

The frequent butt of jokes from stand-up comics and human beings of all ages, Aquaman is the king of the undersea land of Atlantis, but also fights on land on the side of the Justice League. He's actually pretty complex — on TV he's been famously played by Adrien Grenier on "Entourage," as well as a recurring role on "Smallville" and a non-aired pilot called "Mercy Reef" — but he's never been played before on film.

And who better to shut down any and all jokes about the him standing toe-to-toe with Superman, Batman and Wonder Woman in the upcoming "Justice League" movie than The Rock?

Nobody laughs at The Rock unless he wants you to. Nobody.

It's also possible The Rock could be talking about something else entirely, like Guillermo del Toro's "Justice League Dark" movie, or even as The Sandman, in Joseph Gordon-Levitt's movie of the same name.

And copious online speculation has The Rock playing Superman villain Lobo, based on a roundtable interview with online journalists where Johnson said the character, "had to be a bada-- motherf---er, okay, and on a Superman level of power, where could throw down."

Yes, that's Lobo, who is stronger than Superman; but that could also be Johnson saying they needed to amp up the power level of Aquaman considerably. It's vague enough that the speculation could go either way.

Still, with this simple tweet a Rock-powered DC Comics movie is one step closer to happening.